Just filed the necessary upstream bug for the three devices listed in comment #8.
** Bug watch added: GNOME Bug Tracker #643793 https://bugzilla.gnome.org/show_bug.cgi?id=643793 ** Also affects: network-manager via https://bugzilla.gnome.org/show_bug.cgi?id=643793 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/700316 Title: usbserial stopped working during a recent upgrade, no serial line via usb anymore -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs